Charles e



IMPROVEMENT IN VALVES FOR STEAMy ENGINES.

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TO ALL WHOM IT MAY CON CERN:

Be it known that I, CHARLES E. CASE, of Xenia, in the county of Greene,in the State of Ohio, have invented a new Valve, to be used in SteamvEngines or other Machines; and I do further declare that the followingis a full and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in the construction of the valvewhereby to cause it to rotate, and

. thus perform a grinding eileot on the valve and its seat, and thuscause them to remain tight. This motion is imparted tothe valve by meansof the liquid or steam acting'upon and turning or rotating the valve, bymeans of the spiral or twisted pin which is situated on the under sideof the valve and attached to it. l

To enable others skilled in the art to make and use my invention, I willdescribe its construction and oper'- ation. I construct my valveasirepresented in the accompanying drawings, in which the valve isrepresented in all its several parts.

A represents the upper section, which is of' cylindrical form, havingthe passage for the liquids or steam enlarged, so as to admit of theraising and falling of the valve as it opens and closes. Across theupper portion of this opening I arrange a pivot, F, on which, or againstwhich, the valve may turn, but which allows the valve room enough to actwith facility.

The lower part, represented at B, is the same as the upper, with theexception that the valve-seat, which ris as represented at G, thisIbeing cut so that the valve may sit upon it in such a manner as toprevent the return of the liquid orsteam which has passed through it.

The valve proper is of a/hemispherioal form, as represented at C, havinga spiral pin, II, attached to the l under side, and neatly fitting theAopening in the lower section-B, through which the liquid or steamcannot pass' without raising the valve and givingv it a rotating motion.

E represents the top of the valve- The liquid or, steam is allowed topass through the openings L h z. which are made large enough for easyegress, leaving wings, by which the valve is guided in its motions.

D represents the valve complete in all its'parts. Having thus describedmy invention, what I claimas new, and desire to secure by LettersPatent, is- The valve Gv'and spiral pin I-I, constructed and arrangedsubstantially upon the principle and in the manner herein set forth.

CHARLES E. CASE.

Witnesses:

EDM. F. BROWN. C. S. VIGNS.

